Feel free to just link to it from the comments, but if you want to explain why, even better.
If you feel you don't know enough about magic cards, you can go to http://gatherer.wizards.com and start by choosing a color, a creature type, maybe a cost (1 is low, 5 is high) and seeing what appeals to you of those.
The card I identify with is
Cost: 4 colorless and 2 black mana
Rules: Skip your draw step. Pay one life: draw a card.
Flavor text: He craves only one commodity.
Black is my favorite magic color in part because it's about unusual tradeoffs. A lot of cards are about paying something besides mana (like life, or sacrificing a creature, or discarding cards.) Many other black cards then make that cost itself work for you (often by operating from the "graveyard").
And there's no card that's about "tradeoff's" more than this one with bargain in the name. What's more though, it's a really obvious trade. A drawn card is totally worth one life. In fact, it's considered a game-breaking card for that reason. I like that sort of contract.
I also like that it isn't a creature. Enchantments are helpers, not game winners on their own.
Somewhat more abstractly, if "cards" here are all standins for our friends, then I like being this card that is primarily useful for "draw in more friends". I like connecting people.